Jawab:
Semoga membantu ya :)
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Jawab:
Semoga membantu ya :)
300 cm x 300 cm = 90.000 cm^2
luas ubin = 20 x 20 cm = 400 cm^2
jumlah ubin yang diperlukan
90.000 cm^2 : 400 cm^2 = 225 Buah